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BQ24090: but its new query

Part Number: BQ24090
Other Parts Discussed in Thread: TPS22914

Hi, 

Greeting!!

As you see below image, I m  using NPN transistor as a switch control for the input path will that adversely affect the charge IC?.

The Reason for the switch is given below

As you see, input source act as an output source during bo power supply condition.

The electrolytic capacitor gives input to the controller, which controls the switching action.

Please help me solve this!!